Zinc Essays

one of the top manufactures of Zinc in the U.S. One of the main uses of Zinc is in making protective coatings for steel and iron. Zinc protects iron and steel from corrosion. Horsehead also makes zinc oxide, used in tires, chemicals and paints and recovers and sells nickel from waste. Zinc alloys are used in making many components that can be used in the manufacture of automobiles. Zinc can also be used to make batteries such as zinc-air batteries and zinc-manganese batteries. These are

Zinc reacts with copper (II) sulphate to produce zinc sulphate and copper. As zinc is placed higher than copper in the electrochemical series, zinc is more electropositive than copper. Thus, the black zinc metal dissolved indicates that zinc ionizes to form zinc ions and displaces the copper (II) ions from 1 M CuSO_4 solution. The reddish-brown precipitate formed indicates copper is deposited after displaced by zinc. At first, the blue colour of 1 M CuSO_4 solution indicates the presence of copper

8. Balanced chemical equation for the formation of zinc chloride from zinc and HCl First, we set up the equation xZn(s) + yHCl(aq) → ZnxCly (s) + y/2H2(g) . We knew the empirical formula for zinc chloride is ZnCl8. Based on the law of conservation of matter, we got the balanced equation: Balanced equation: Zn(s) + 8 HCl(aq) → ZnCl8 (s) + 4 H2 (g) 9. Percentage Error Calculation: Experimental values: (1.8+4.34)/2= 3.07g (average mass) Accepted values: 2.67g ZnCl8 0.5g Zn x 1mol Zn/65.4g Zn

This lab was performed in order to confirm the empirical formula of Zinc Chloride. The accepted empirical formula of the substance is two chlorine atoms to one zinc atom. The reason there is a two to one ratio is because a single replacement reaction occurs. When zinc and hydrochloric acid react together, it results in zinc chloride and hydrogen being the products. Because zinc needs two chlorine atoms to maintain stability, there must always be a two to one ratio between the two to keep the relationship

place. Lead had replaced Copper in the solution. Zinc (Zn), however, had replaced Lead thus leaving Copper to be the least active leaving Zinc to be the most active out of the three. In order of activity from least active, to most active, the metals would be lined up as following: Ag, Cu, Pb, Zn, Mg. From this lineup, it was be determined that hydrogen is more active than the elements silver and copper yet less active than zinc and magnesium. Zinc was able to replace the hydrogen present in hydrochloric

Benefits of Zinc for Men: The mineral even can help us sleep better at night, which provides a host of additional benefits. Zinc became a household word as an ingredient in cold lozenges during the 1990s or you may remember those sunscreens from the 1980s that would turn noses white, but physicians and nutritionists have always known it's a mineral that's necessary for good health. Immune Function: Zinc earns its stripes by promoting immune function to fight illness, supporting healthy cell

copper is no longer visible. We wanted to see for ourselves what happens to copper when we made many chemical changes and in the end what happened to zinc when the copper appeared. What we found out at the end is that the copper appeared again which tells us that the copper never left and was never destroyed. What we also found out that the zinc did not leave but it dissolved into the solution and displaced copper forcing it back into copper solid. Methods: On the first day,

Sunshine Mine Is located in the Silver Valley East of Kellogg in Idaho. In 1972, a fire broke out in the mine killing 91 of the 173 miners working that day. ‘The Sunshine has produced millions of tons of lead, zinc, and copper; and over 360 million ounces of silver (Carpenter, n.d.)’. Throughout this report an investigation will be conducted surrounding the metals that were abundant in the mine, the disaster that had occurred at the Sunshine Mine as well as laws and procedures which were altered

CuO was decanted twice, and H2SO4 was added. Zinc was then added to the solution to reduce Cu2+ back to its original form, and any excess Zinc was decanted. The liquid was decanted and the solid was washed with H2O to wash away any acid, and the solid was

composition of copper in the penny has been diminishing since. For the next 145 years, the penny’s copper composition wavered between 95% and 88% until 1982 where the copper composition was reduced to 2.5% while the rest of penny was composed of 97.5% zinc. The reason for this drastic change of copper composition is unknown. However, the use of copper extends further than just penny composition. Copper is quite useful in many realms, especially construction, since it is both water damage resistant and

Materials: Four different fruits (Apple, Zucchini, Lime, Cherry Tomato) Twenty-five pieces of zinc and copper (Fifty total, each about 3.5-4 cm

lived in Baghdad and made a clay jar with vinegar and a copper cylinder inside with a iron rod sticking out. Batteries have definitely changed since then. In the 1800 an Italian physicist Alessandro Volta invented the voltaic pile, which was made of zinc and copper plates with vinegar with leather or pasteboard between each plate. The plates were stacked on top of each other. The bottom and top plate acted as the positive and negative terminals. This was the first time that scientists were able

It was presumed before the experiment that the location of the metal on the Activity Series chart would thus determine the reactivity of the metal. Copper, magnesium, iron, and zinc were all tested in the same five solution compounds; which included hydrochloric acid, sulfate, magnesium chloride, iron chloride, and zinc chloride. Observations of chemical changes within the reaction were recorded to describe the results of the reaction and each metal's reactivity. An example of a single replacement

through the Bunsen burner where we noticed our penny turned gold and a little rainbow. I believe that we made silver and gold because the end results of our pennies were gold. After completing this lab our pennies turned silver because of the zinc and the zinc chloride. Then they turned into gold and a little rainbow because they were waved through the Bunsen burner. An example I can think of relating to this would be colored water. If I want red water all I have to do is add red food coloring to get

The Naica Mine is located in the Mexican State of Chihuahua (1). This mine is run by Industrias Peñoles and is a lead, zinc, and silver mine (1). The mines were discovered in 1794 by prospectors (4). The first valuable mineral found in the Naica Mines was silver, and the mines focused on silver and gold until about 1900 when zinc and lead grew to be more valuable (4). This was in the time of the Mexican Revolution, and revolutionary troops demanded money from the owners of the mine (4). One of the

We wanted to see how different substances affected this phenomenon. When we formulated our guiding question we made sure to preserve these intents in the language: how do foreign substances influence the bonding quality and strength (to the top of a zinc penny in specific) of water? Since these experiments were conducted in groups, we set up a few roles to

Purpose/ Methods The purpose of this experiment was to determine the mass percent Cu2+ in a mineral sample (Malachite), and a rock sample (copper ore). Through the process of spectroscopy, the students were able to determine the percent of copper that each sample yielded. The students were also able to apply the information to the theoretical value of copper in malachite to determine the percent error of the mineral mass percent. Furthermore, the methods used in the experiment provide insight

Introduction Dental amalgams have been proven to a composition of an alloy of silver, copper, tin, and zinc combined with mercury which are dentally advantages when used (Wolff et al., 1983; Desmet et al., 1984; Shraim et al., 2011). ‘The Godfather of Amalgam’; Louis Regnart, added the mercury to solidify or strengthen a cement mix he made to make an amalgam. This mercury also assisted in preserving the cement mixture at liquid form to be used on human teeth (Eames, 1959). Then in 1959, the formula

Introduction/Purpose: This report discusses an experiment done with copper metal. Several reactions were ran with it, which produced different copper compounds to in the end finally recover the original amount of copper. This experiment is important because it proved the Law of Conservation of Mass. The Law of Conservation of Mass states that mass is neither created nor destroyed. So after the last reaction is done there should be the same amount of copper as there was before you began. Material:

Sulfide Mining According to MiningMinnesota.com, “A sulfide is any compound or mineral in which a metallic ion is bonded with sulphur ions” (Mining Minnesota). Sulfide mining is the mining of such ions. Companies, such as PolyMet and Twin Metals Minnesota, are fighting for the right to go to northern and northeastern Duluth where there is a large undeveloped deposit of these precious metals (PolyMet Mining). We use these metals, like copper and nickel, everyday. These companies are trying to get